diff --git a/step18/streamjoins/pom.xml b/step18/streamjoins/pom.xml
index a2e7574..f293d52 100644
--- a/step18/streamjoins/pom.xml
+++ b/step18/streamjoins/pom.xml
@@ -16,7 +16,7 @@
         <dependency>
             <groupId>org.apache.kafka</groupId>
             <artifactId>kafka-clients</artifactId>
-            <version>2.3.0</version>
+            <version>2.6.3</version>
         </dependency>
         <dependency>
             <groupId>org.apache.kafka</groupId>